Finds alternative wikis to use instead of fandom, gives you the choice if several are found and brings you to a cleaner version of the fandom page if none are found.
// ==UserScript==
// @name AntiFandom: Alternative Wiki Redirector
// @namespace http://tampermonkey.net/
// @version 1.12
// @description Finds alternative wikis to use instead of fandom, gives you the choice if several are found and brings you to a cleaner version of the fandom page if none are found.
// @author Emily
// @match https://*.fandom.com/wiki*
// @icon https://www.google.com/s2/favicons?domain=fandom.com
// @grant GM_xmlhttpRequest
// @connect *
// @run-at document-start
// @license CC0-1.0 license
// ==/UserScript==
(function () {
"use strict";
// -------------------------------
// STEP 0 – Manual Alternative Overrides Config
// -------------------------------
// Here we define manual overrides for specific wikis
// For Lord of the rings the manual alternative will always go to tolkiengateway.net
const manualOverrides = {
"lotr": {
alternatives: [
{
name: "TolkienGateway",
base: "https://tolkiengateway.net",
pathPrefix: "/wiki/",
// For exact pages return the page name; for categories which don't have easily reformattable addresses we redirect to the homepage, it's not perfect but better than nothing.
transform: function(page) {
return page.startsWith("Category:") ? null : page;
},
homepage: "https://tolkiengateway.net/wiki/Main_Page"
}
]
},
// For hearthstone-archive we force redirection back to hearthstone.wiki.gg as we do for the regular hearthstone fandom wiki
"hearthstone-archive": {
alternatives: [
{
name: "Hearthstone.wiki.gg",
base: "https://hearthstone.wiki.gg",
pathPrefix: "/wiki/",
transform: function(page) {
return page; // Always use the exact page.
},
homepage: "https://hearthstone.wiki.gg/"
}
]
}
};
// -------------------------------
// STEP 1 – Extract GameName and Page Information
// -------------------------------
const currentURL = window.location.href;
if (!currentURL.includes("fandom.com")) return; // Ensure we're on a Fandom page.
// GameName is extracted from the subdomain (e.g. "hearthstone" from "hearthstone.fandom.com")
const hostnameParts = window.location.hostname.split(".");
const gameName = hostnameParts[0];
// Extract the page portion (everything after "/wiki/")
const wikiPrefix = "/wiki/";
let rawPage = "";
if (window.location.pathname.indexOf(wikiPrefix) === 0) {
rawPage = window.location.pathname.substring(wikiPrefix.length);
} else {
console.error("URL format not recognized. Expected '/wiki/' in the path.");
return;
}
// -------------------------------
// STEP 2 – Define Default Alternative Wiki Formats
// -------------------------------
const alternatives = [
{
name: "Wiki.gg",
base: `https://${gameName}.wiki.gg`,
pathPrefix: "/wiki/",
transform: (page) => page // No transformation needed.
},
{
name: ".wiki",
base: `https://${gameName}.wiki`,
pathPrefix: "/w/",
transform: (page) => page // No transformation needed.
},
{
name: "Wiki.com",
base: `https://wiki.${gameName}.com`,
pathPrefix: "/en-us/",
transform: (page) => page // No transformation needed.
},
{
name: "Fextralife.com",
base: `https://${gameName}.wiki.fextralife.com`,
pathPrefix: "/",
transform: (page) => {
if (page.startsWith("Category:")) {
const catContent = page.substring("Category:".length);
const index = catContent.indexOf("_");
return index !== -1 ? catContent.substring(0, index).trim() : catContent.trim();
} else {
// For normal pages, replace underscores with plus signs. It's a fextralife specific thing for how they handle spaces.
return page.replace(/_/g, "+");
}
}
}
];
// -------------------------------
// STEP 3 – Check URL Availability
// -------------------------------
/**
* Uses GM_xmlhttpRequest to send a HEAD request.
* Ensures resolution (true if status is 200–399) within 1500ms by using:
* - A manual timer
* - An explicit ontimeout callback (there's some fandom wikis with no match that otherwise get stuck)
*
* @param {string} url - The URL to check.
* @returns {Promise<boolean>} - Resolves true if the page exists.
*/
function checkPageExists(url) {
return new Promise((resolve) => {
let resolved = false;
const TIMEOUT_MS = 1500;
const timer = setTimeout(() => {
if (!resolved) {
resolved = true;
console.warn("Manual timeout reached for: " + url);
resolve(false);
}
}, TIMEOUT_MS);
GM_xmlhttpRequest({
method: "HEAD",
url: url,
timeout: TIMEOUT_MS,
ontimeout: () => {
if (!resolved) {
resolved = true;
clearTimeout(timer);
console.warn("GM_xmlhttpRequest timeout for: " + url);
resolve(false);
}
},
onload: (response) => {
if (!resolved) {
resolved = true;
clearTimeout(timer);
resolve(response.status >= 200 && response.status < 400);
}
},
onerror: () => {
if (!resolved) {
resolved = true;
clearTimeout(timer);
resolve(false);
}
}
});
});
}
// -------------------------------
// STEP 4 – Check a Default Alternative Object
// -------------------------------
/**
* For a given alternative (from the default list), check concurrently:
* - The full page: alt.base + alt.pathPrefix + alt.transform(rawPage)
* - The homepage: alt.base + "/"
*
* Returns an object { index, type, url, name }.
*/
async function checkAlternative(alt, index) {
const transformedPage = alt.transform(rawPage);
const fullUrl = alt.base + alt.pathPrefix + transformedPage;
const domainUrl = alt.base + "/";
// Execute both check requests in parallel.
const [pageExists, domainExists] = await Promise.all([
checkPageExists(fullUrl),
checkPageExists(domainUrl)
]);
if (pageExists) {
return { index, type: "page", url: fullUrl, name: alt.name };
} else if (domainExists) {
return { index, type: "domain", url: domainUrl, name: alt.name };
} else {
return { index, type: "none", url: null, name: alt.name };
}
}
// -------------------------------
// STEP 5 – Attempt Redirection Combining Default and Manual Overrides.
// -------------------------------
async function attemptRedirect() {
// Check default alternatives concurrently, but use Promise.allSettled so that unfulfilled promises don't block us.
const autoPromises = alternatives.map((alt, i) => checkAlternative(alt, i));
const autoResultsSettled = await Promise.allSettled(autoPromises);
let autoResults = autoResultsSettled
.filter(r => r.status === "fulfilled")
.map(r => r.value)
.filter(r => r.type !== "none");
// Check manual overrides if present for this wiki.
let manualResults = [];
if (manualOverrides.hasOwnProperty(gameName)) {
const manualAlts = manualOverrides[gameName].alternatives;
for (const m of manualAlts) {
const transformed = m.transform(rawPage);
// If transformed use the homepage.
const url = transformed ? m.base + m.pathPrefix + transformed : m.homepage;
if (await checkPageExists(url)) {
// Use a high index to let default (auto) alternatives take precedence if available.
manualResults.push({ index: 1000, type: "manual", url: url, name: m.name });
}
}
}
// Combine default and manual results.
const combined = autoResults.concat(manualResults);
if (combined.length > 1) {
// More than one alternative was found: offer a choice overlay.
displayChoiceOverlay(combined);
} else if (combined.length === 1) {
// Exactly one alternative: redirect automatically.
const chosen = combined[0];
console.log(`[${chosen.name}] Selected (${chosen.type}) – redirecting to: ${chosen.url}`);
window.stop();
window.location.replace(chosen.url);
} else {
// If no alternative is found, fall back to AntiFandom.
console.error("No alternative wiki found; redirecting to AntiFandom.");
showOverlayMessage("No alternative wiki found, proceeding with AntiFandom...");
const antifandomUrl = `https://antifandom.com/${gameName}/wiki/${rawPage}`;
// Redirect to AntiFandom after a short delay.
setTimeout(() => {
window.location.replace(antifandomUrl);
}, 2000);
}
}
// -------------------------------
// STEP 5.1 – Display Choice Overlay (for Multiple Alternatives)
// -------------------------------
function displayChoiceOverlay(choices) {
// Create an overlay with clickable buttons for each available alternative.
let overlay = document.getElementById("redirectOverlay");
if (!overlay) {
overlay = document.createElement("div");
overlay.id = "redirectOverlay";
overlay.style.cssText = "position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: black; color: white; display: flex; flex-direction: column; align-items: center; justify-content: center; font-family: sans-serif; font-size: 24px; z-index: 9999;";
document.body.appendChild(overlay);
}
let content = `<div style="font-size: 64px; margin-bottom: 20px;">🔎</div>`;
content += `<div>Multiple alternative wikis found.<br>Please choose one:</div>`;
content += `<div style="margin-top: 20px;">`;
choices.forEach(choice => {
// When clicked, the button immediately redirects.
content += `<button style="margin: 10px; padding: 10px 15px; font-size: 18px; cursor: pointer;" data-url="${choice.url}">${choice.name}</button>`;
});
content += `</div>`;
overlay.innerHTML = content;
// Add event listeners to buttons after they are added to the DOM.
overlay.querySelectorAll("button[data-url]").forEach(button => {
button.addEventListener("click", () => {
const url = button.getAttribute("data-url");
window.location.replace(url);
});
});
}
window.displayChoiceOverlay = displayChoiceOverlay;
// -------------------------------
// STEP 6 – Overlay: Create a Message Overlay
// -------------------------------
/**
* Creates (or updates) a floating overlay that covers the page with the given text
* and displays a large magnifying glass emoji (🔎).
*
* @param {string} message - The message to display.
*/
function showOverlayMessage(message) {
const createOverlay = () => {
let overlay = document.getElementById("redirectOverlay");
const unicodeMagnifyingGlass = `<div style="font-size: 64px; margin-bottom: 20px;">🔎</div>`;
const content = unicodeMagnifyingGlass + `<div>${message}</div>`;
if (!overlay) {
overlay = document.createElement("div");
overlay.id = "redirectOverlay";
overlay.style.cssText = "position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: black; color: white; display: flex; flex-direction: column; align-items: center; justify-content: center; font-family: sans-serif; font-size: 24px; z-index: 9999;";
overlay.innerHTML = content;
document.body.appendChild(overlay);
} else {
overlay.innerHTML = content;
}
};
if (document.body) {
createOverlay();
} else {
// Wait for the DOM to be ready if document.body is not available.
const observer = new MutationObserver(() => {
if (document.body) {
observer.disconnect();
createOverlay();
}
});
observer.observe(document.documentElement, { childList: true });
}
}
// -------------------------------
// STEP 7 – Start the Process.
// -------------------------------
attemptRedirect().catch((err) => {
console.error("Error in attemptRedirect:", err);
showOverlayMessage("An error occurred. Please try again later.");
});
if (document.body) {
// If the body is already available, show the overlay immediately.
showOverlayMessage("Searching for an alternative wiki…");
} else {
// If the body is not yet available, observe for its creation.
const observer = new MutationObserver(() => {
if (document.body) {
observer.disconnect(); // Stop observing once the body is available.
showOverlayMessage("Searching for an alternative wiki…");
}
});
observer.observe(document.documentElement, { childList: true });
}
})();
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